[ 065/150] drm/radeon: fix multi-head power profile stability on BTC+ asics

Greg Kroah-Hartman
2013-02-26T23:57:48Z

From: Alex Deucher <alexander.deucher@amd.com>

commit 7ae764b11ed63279e9dcf25be972ff4ca21a9875 upstream.

vddci needs to track mclk for multi-head.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/gpu/drm/radeon/evergreen.c | 13 +++++++++++++
drivers/gpu/drm/radeon/radeon_pm.c | 2 +-
2 files changed, 14 insertions(+), 1 deletion(-)

--- a/drivers/gpu/drm/radeon/evergreen.c
+++ b/drivers/gpu/drm/radeon/evergreen.c
@@ -403,6 +403,19 @@ void evergreen_pm_misc(struct radeon_dev
rdev->pm.current_vddc = voltage->voltage;
DRM_DEBUG("Setting: vddc: %d\n", voltage->voltage);
}
+
+ /* starting with BTC, there is one state that is used for both
+ * MH and SH. Difference is that we always use the high clock index for
+ * mclk and vddci.
+ */
+ if ((rdev->pm.pm_method == PM_METHOD_PROFILE) &&
+ (rdev->family >= CHIP_BARTS) &&
+ rdev->pm.active_crtc_count &&
+ ((rdev->pm.profile_index == PM_PROFILE_MID_MH_IDX) ||
+ (rdev->pm.profile_index == PM_PROFILE_LOW_MH_IDX)))
+ voltage = &rdev->pm.power_state[req_ps_idx].
+ clock_info[rdev->pm.profiles[PM_PROFILE_HIGH_MH_IDX].dpms_on_cm_idx].voltage;
+
/* 0xff01 is a flag rather then an actual voltage */
if (voltage->vddci == 0xff01)
return;
--- a/drivers/gpu/drm/radeon/radeon_pm.c
+++ b/drivers/gpu/drm/radeon/radeon_pm.c
@@ -169,7 +169,7 @@ static void radeon_set_power_state(struc

/* starting with BTC, there is one state that is used for both
* MH and SH. Difference is that we always use the high clock index for
- * mclk.
+ * mclk and vddci.
*/
if ((rdev->pm.pm_method == PM_METHOD_PROFILE) &&
(rdev->family >= CHIP_BARTS) &&